Radii of Nb-Species Nb = 116 pm Z1 Z2 Distance Species Reference 7 41 165.25 NbN pw 8 41 169.4 Br3NbO [95] 8 41 171.1 Cl3NbO [92] 8 41 164.62 NbO+ pw 16 41 210.4 Av. of X3(SPPH3)Nb-S and X4Nb-s1- [108] 16 41 212 Cl3NbS [95] 16 41 213.4 Br3NbS [95]